USAF C-130 Completes 1st Flight With Enhanced Rolls-Royce Engine

USAF C-130 Completes 1st Flight With Enhanced Rolls-Royce Engine: Upgraded T56 Turboprop Promises To Deliver Fuel Savings, Extend Engine Life Rolls-Royce and the US Air Force are conducting flight tests for an enhancement for the T56 turboprop engine, which powers the C-130H transport aircraft. The Series 3.5 Engine Enhancement is designed to deliver fuel savings and reliability improvements, resulting in improved life cycle costs.